Aqueous textile fiber impregnating composition



Patented Aug. 6,

UNITED, STATES PATENT orrlcs:

. Aqueous TEXTILE mm mas-Gimme oomosrrron Max Nassau, Berlin-Wllmersdorf, Fritz .Sommer, Berlin-Charlottenburg, and Georg Wiegand,

Berlin-Grlmau,

Germany, as'signors to the firm: Chemische Fabrik Grunau Landshofl &; Meyer A. G., Berlin-Gnmau, Germany, a com- Germany pany oi No Drawing. Application May a, 1937, Serial a...

140,450. In Germany September 8, 1933 l f 6 Claims.

substance. That process using two baths successively was comparatively inconvenient and expensive.

When using dispersions of fatty substances containing aluminium salts, 'a single .bath proved suflicient for impregnating textile products. However, the aluminium salts having a flocculating effect upon the dispersions of the fatty substances, it became necessary to add protective colloids to said dispersions in order to prevent flocculation. As protective colloids there have been used mainly glue, gelatine, and tragacanth. These'protective colloids effect a kind ofcongealing of the dispersion, i. e. a solidiflcation of the entire dispersion whereby flocculation will be prevented. These" congealed dispersions are referred to as dead dispersions and require re-melting prior to being used. Furthermore, dispersions containing protective colloids are not capable of being readily used in all cases, the protective colloids mentioned above imparting an undesirable hard feel to the treated vegetable and animal fibres.

It is the general object of the present invention to-remove all these disadvantages. A more i specific object is dispersions of fatty substances containing aluminium salts which are stable, 1. e. ,do not flocculate and are not affected by the hardening constituents oi. water. A still further object is dispersions of fatty substances contain ing aluminium salts which when used for impregnating textile products will make said products waterproof without affecting their natural feel. These objects are accomplished by incorporating with the dispersions, in addition to alu-. minium salts, the condensation products of high molecular split-oft products of'albumin of the o Lvsalbinic and protalbinic acid type with higher fatty acid chlorides. These condensation products are obtained by reacting high molecular split-oil products of the lysalbinic and pro-- talbinic acid type with higher fatty acid chlorides in an alkaline solution, as described in V 7 weight.

U. S; patent to Fritz Sommer, No. 2,015,912. Precipitation of the condensation products is effected by adding an acid to the solution. The dispersions to be used for impregnating purposes are prepared by reacting these condensa- 5 tion products with aluminium salts. The dispersionsso obtained are able to disperse still further amounts of fatty substances of various kinds, such as paraflin wax. These dispersions containing additional fatty substances will give 10 particularly desirable impregnating eilects.

Our invention is illustrated but not limited by the following examples in which parts are by Example I 81 parts of a solution of high molecular splitoif products of albumin which has been prepared by. alkaline decomposition of leather waste, are reacted with 18 parts of stearic acid chloride the solution being kept alkaline by means of caustic soda. 'A solution of sodium stearyl lysalbinate is thus obtained. By adding a mineral acid to the solution stearyl 'lysalbinic acid is precipitated.

150 parts of the isolated stearyl lysalbinic acid are stirred with 500 parts oi. an aluminium formate solution of 15% till a homogeneous dispersion has been formed. For impregnating purposes the dispersion so obtained is being diluted in the ratio of 1:25. Textile fabrics treated with this solution are made water-repellent without acquiring a hard feel.

. Emma r1 To 650 parts of the dispersion prepared according to Example Ithere are added, at to 0., 250 parts of melted paraflln wax. The mixture is stirred till a homogeneous salve-like mass has been formed. Even when stored for a prolonged time this salve-like mass is stable, i. e.'

, no separation of the phases will occur. For impregnating purposes this salve-like mass is being diluted in theratio oi 1:100. when used for treating textile products this'dispersion is particularly effective in making the products water proof without affecting their natural feel.

Instead of aluminium formate named in the examples, there may be employed various other aluminium salts such asaluminium acetate, aluminium sulphate, alum, potash alum, and ammonia alum, as will be obvious to those familiar with the art.

Similarly, as an alternative to stearyl lysalbinic.

acid, there may be used other condensation prod- 55 position comprising an aqueous dilute dispersion oi! the reaction product of a higher fatty acid sub-. stituted lysalbinic. acid with an aluminum salt in water solution, said reaction product being present inthe composition in sufiicient amount to impart to textile fibers treated therewith waterrepellant properties.

'2. An aqueous textile fiber impregnating composition comprising an aqueous dilute dispersion or the reaction product of a higher fatty acid substituted lysalbinic acid with an aluminum salt in water solution, said composition having incorporated therein a substantial quantity of wax, said reaction product being present in the composition in suflicient' amount to impart to textile fibers treated therewith water-repellant properties.

3. An aqueous textile fiber impregnating composition comprising an aqueous dilute dispersion 'tion in sutficient amount 'to impart to textile fibers treated therewith water-repellant properties,

4. An aqueous textile fiber impregnating composition comprising an aqueous dilute dispersion of the reaction product oi. an oleyl lysalbinic acid with an aluminum salt in water solution, said reaction product being present in the composition in sufllcient amount to impart to textile fibers treated therewith water-repellent properties.

5. An aqueous textile fiber impregnating composition comprising an aqueous dilute dispersion oi! the reaction product of a higher unsaturated fatty acid chloride and the high molecular splitoil products of albumen of the 'lysalbinic and protalbinic acid type with an aluminum salt, said reaction product being present in the composition in sufiicient amount to impart to textile fibers treated therewith water-repellent properties.

6. An aqueous textile fiber impregnating composition comprising an aqueous dilute dispersion of the reaction product of a higher unsaturated fatty acid chloride and the high molecular splitoff products of albumen oi the lysalbinic and protalbinic acid type with an aluminum salt, said reaction product being present in the composition in suflicient amount to impart to textile fibers treated therewith water-repellent properties, said composition containing substantial amounts of paraflin wax, saponifiable fats and waxes.

" MAX NASSAU.

FRITZ SOM'MER. GEiORG WIEGAND. 

